Search

Study of nitrogen influence to productive characteristics of natural meadow type Agrostidetum vulgare was done at locality Vrbica near Berane (830 m height above sea level), in period 2002 - 2003, by application of following fertilizing variants: 0, 30, 60, 90 and 120 kgha-1 N. Results of twoyears examinations demonstrated that the fertilization with nitrogen have had great impact to yield extent of hay and raw proteins, as well as to changes in floristic composition of lawns. The highest hay yields (5,34 tha-1) and raw proteins (546,3 kgha-1) have been achieved by fertilization with 120 kgha-1, but the greatest effect of applied nutrient to yield increasing was in variantwith 90 kgha-1 N. Portions of grasses and green in overall yield of the lawns have grown with increasing of fertilizer dose. [ABSTRACT FROM AUTHOR]

The trial was carried out during two years (2005 and 2006) on Agrostietum vulgate - type meadow in the hilly mountainous region near Valjevo (at an altitude 750 m). The investigation included six NPK fertilizer rates (N0P0K0, N50P50K50, N100P50K50, N100P100K100, N150P100K100 and N200P150K150 kg ha-1 yr-1). The increase in N, P, and K fertilization level resulted in corresponding increases in the quantity of grass dry matter. In particular, the increases in N rate had a favorable effect on DM yield. The maximum two-year average dry matter yield of 8.17 t ha-1 was achieved with the highest NPK rate (200:150:150 kgha-1). The increase was 5.94 t ha-1 or 365% compared with the control. DM yield ratio between the highest NPK rate and control was similar in 2005 and 2006 (indices 357 and 377, respectively.) [ABSTRACT FROM AUTHOR]